com.ait.lienzo.test.stub.overlays.TransformJSO Maven / Gradle / Ivy

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[KIE] Lienzo - Testing Framework
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/*
 * Copyright (c) 2017 Ahome' Innovation Technologies. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.ait.lienzo.test.stub.overlays;

import com.ait.lienzo.client.core.types.Point2D;
import com.ait.lienzo.test.annotation.StubClass;
import com.ait.lienzo.test.util.LienzoMockitoLogger;
import com.google.gwt.core.client.JavaScriptObject;

/**
 * Stub for class com.ait.lienzo.client.core.types.Transform$TransformJSO.
 *
 * @author Roger Martinez
 * @since 1.0
 *
 */
@StubClass("com.ait.lienzo.client.core.types.Transform$TransformJSO")
public class TransformJSO extends JavaScriptObject
{
    private final double[] matrix = new double[6];

    protected TransformJSO()
    {
        LienzoMockitoLogger.log("TransformJSO", "Creating custom Lienzo overlay type.");
    }

    public static TransformJSO make()
    {
        return make(1d, 0d, 0d, 1d, 0d, 0d);
    }

    public static TransformJSO make(final double x, final double y)
    {
        return make(1d, 0d, 0d, 1d, x, y);
    }

    public static TransformJSO make(final double m00, final double m10, final double m01, final double m11, final double m02, final double m12)
    {
        final TransformJSO jso = new TransformJSO();
        jso.matrix[0] = m00;
        jso.matrix[1] = m10;
        jso.matrix[2] = m01;
        jso.matrix[3] = m11;
        jso.matrix[4] = m02;
        jso.matrix[5] = m12;
        return jso;
    };

    public void reset()
    {
        this.matrix[0] = 1;
        this.matrix[1] = 0;
        this.matrix[2] = 0;
        this.matrix[3] = 1;
        this.matrix[4] = 0;
        this.matrix[5] = 0;
    }

    public void translate(final double x, final double y)
    {
        this.matrix[4] += (this.matrix[0] * x) + (this.matrix[2] * y);
        this.matrix[5] += (this.matrix[1] * x) + (this.matrix[3] * y);
    }

    public boolean same(final TransformJSO that)
    {
        return (this.matrix[0] == that.matrix[0]) && (this.matrix[1] == that.matrix[1]) && (this.matrix[2] == that.matrix[2]) && (this.matrix[3] == that.matrix[3]) && (this.matrix[4] == that.matrix[4]) && (this.matrix[5] == that.matrix[5]);
    }

    public boolean isIdentity()
    {
        return (this.matrix[0] == 1) && (this.matrix[1] == 0) && (this.matrix[2] == 0) && (this.matrix[3] == 1) && (this.matrix[4] == 0) && (this.matrix[5] == 0);
    }

    public TransformJSO copy()
    {
        return make(this.matrix[0], this.matrix[1], this.matrix[2], this.matrix[3], this.matrix[4], this.matrix[5]);
    }

    public void scale(final double sx, final double sy)
    {
        this.matrix[0] *= sx;

        this.matrix[1] *= sx;

        this.matrix[2] *= sy;

        this.matrix[3] *= sy;
    }

    public void shear(final double shx, final double shy)
    {
        final double m00 = this.matrix[0];

        final double m10 = this.matrix[1];

        this.matrix[0] += shy * this.matrix[2];

        this.matrix[1] += shy * this.matrix[3];

        this.matrix[2] += shx * m00;

        this.matrix[3] += shx * m10;
    }

    public void rotate(final double rad)
    {
        final double c = Math.cos(rad);

        final double s = Math.sin(rad);

        final double m11 = (this.matrix[0] * c) + (this.matrix[2] * s);

        final double m12 = (this.matrix[1] * c) + (this.matrix[3] * s);

        final double m21 = (this.matrix[0] * -s) + (this.matrix[2] * c);

        final double m22 = (this.matrix[1] * -s) + (this.matrix[3] * c);

        this.matrix[0] = m11;

        this.matrix[1] = m12;

        this.matrix[2] = m21;

        this.matrix[3] = m22;
    }

    public void multiply(final TransformJSO transform)
    {
        final double m11 = (this.matrix[0] * transform.matrix[0]) + (this.matrix[2] * transform.matrix[1]);

        final double m12 = (this.matrix[1] * transform.matrix[0]) + (this.matrix[3] * transform.matrix[1]);

        final double m21 = (this.matrix[0] * transform.matrix[2]) + (this.matrix[2] * transform.matrix[3]);

        final double m22 = (this.matrix[1] * transform.matrix[2]) + (this.matrix[3] * transform.matrix[3]);

        final double dx = (this.matrix[0] * transform.matrix[4]) + (this.matrix[2] * transform.matrix[5]) + this.matrix[4];

        final double dy = (this.matrix[1] * transform.matrix[4]) + (this.matrix[3] * transform.matrix[5]) + this.matrix[5];

        this.matrix[0] = m11;

        this.matrix[1] = m12;

        this.matrix[2] = m21;

        this.matrix[3] = m22;

        this.matrix[4] = dx;

        this.matrix[5] = dy;
    }

    public double getDeterminant()
    {
        return (this.matrix[0] * this.matrix[3]) - (this.matrix[2] * this.matrix[1]);// m00 * m11 - m01 * m10
    }

    public TransformJSO getInverse()
    {
        final double m00 = this.matrix[0];
        final double m10 = this.matrix[1];
        final double m01 = this.matrix[2];
        final double m11 = this.matrix[3];
        final double m02 = this.matrix[4];
        final double m12 = this.matrix[5];

        final double det = (m00 * m11) - (m01 * m10);

        return make(m11 / det, -m10 / det, -m01 / det, m00 / det, ((m01 * m12) - (m11 * m02)) / det, ((m10 * m02) - (m00 * m12)) / det);
    }

    public double get(final int i)
    {
        return this.matrix[i];
    }

    public void transform(final Point2D.Point2DJSO src, final Point2D.Point2DJSO target)
    {
        final double x = src.getX();
        final double y = src.getY();
        target.setX((x * this.matrix[0]) + (y * this.matrix[2]) + this.matrix[4]);
        target.setY((x * this.matrix[1]) + (y * this.matrix[3]) + this.matrix[5]);
    }
}